Bug Description

ami-4438b474 is one of the images of type Ubuntu 12.04 (Precise Pangolin) [20120616] at http://uec-images.ubuntu.com/releases/precise/release/ and more specifically the us-west2 ebs 64bit variant. Instances launched from it lack three log files I've grown accustomed to using and I could find no information indicating they've been deliberately deprecated.

Did this regress?
$ last
last: /var/log/wtmp: No such file or directory
Perhaps this file was removed by the operator to prevent logging last info.
$ cat /etc/cloud/build.info
build_name: server
serial: 20121002